Class 9 Math Quiz Questions and Answers

If you are selling 15 c-ds to 3 costomers how many c-d does each customer have?

Answer:- 5

What happens to the area of a rectangle when you double the legth of both sides?

Answer: Area is 4x

If I have a cirle with a radius of 50yds, what is the diameter?

Answer:- 100yds

What is the square root of 49?

Answer:- 7

What is the binary equivalent of the decimal number 45?

Answer:- 101101

What is the decimal equivalent of the binary number 11001?

Answer:- 25

Change 36 km/h to meters per second:

Answer:- 10 m/ sec

The sum of three consecutive even numbers is 222. What are the numbers?

Answer:- 72,74,76

What is the value of x in the equation 4(x+2)=24?

Answer:- X=4

What is the simplified form of 5ab – 7ba + 4ab=?

Answer:- 2ab

What is 0.67543 rounded to 2 significant figures?

Answer:- 0.68

What is the result when you reduce $80 by 11%?

Answer:- $71.20

What is the value of 4*4-2*(-3)+6= ?

Answer:- 28

What is 68/0.00001 expressed as an ordinary number?

Answer:- 68,000,000

What is 3/20 as a decimal?

Answer:- 0.15

If x-12y = 0, what is y/x?

Answer:- 1/12  

The price of an item increases by 20% and then decreases by 20%. What is the net effect on the price?

Answer:- Decreased by 4% 

Given the equation y2+ 4=20, what are the values of y?

Answer :- 4 or -4  

What is the next number in the sequence: 3, 7, 15, 31, ?

Answer :- 63  

If x + 5 = 10, then what is the value of x?

Answer :- 5   

A is 40% of B. What percentage is B of A?

Answer :- 250%  

 

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